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Dynamical system analysis of FLRW models with Modified Chaplygin gas

We investigate Friedmann–Lamaitre–Robertson–Walker (FLRW) models with modified Chaplygin gas and cosmological constant, using dynamical system methods. We assume [Formula: see text] as equation of state where [Formula: see text] is the matter-energy density, p is the pressure, [Formula: see text] is...

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Detalles Bibliográficos
Autores principales: Yılmaz, Ali Osman, Güdekli, Ertan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7854687/
https://www.ncbi.nlm.nih.gov/pubmed/33531516
http://dx.doi.org/10.1038/s41598-020-80396-w
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author Yılmaz, Ali Osman
Güdekli, Ertan
author_facet Yılmaz, Ali Osman
Güdekli, Ertan
author_sort Yılmaz, Ali Osman
collection PubMed
description We investigate Friedmann–Lamaitre–Robertson–Walker (FLRW) models with modified Chaplygin gas and cosmological constant, using dynamical system methods. We assume [Formula: see text] as equation of state where [Formula: see text] is the matter-energy density, p is the pressure, [Formula: see text] is a parameter which can take on values [Formula: see text] as well as A and [Formula: see text] are positive constants. We draw the state spaces and analyze the nature of the singularity at the beginning, as well as the fate of the universe in the far future. In particular, we address the question whether there is a solution which is stable for all the cases.
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spelling pubmed-78546872021-02-03 Dynamical system analysis of FLRW models with Modified Chaplygin gas Yılmaz, Ali Osman Güdekli, Ertan Sci Rep Article We investigate Friedmann–Lamaitre–Robertson–Walker (FLRW) models with modified Chaplygin gas and cosmological constant, using dynamical system methods. We assume [Formula: see text] as equation of state where [Formula: see text] is the matter-energy density, p is the pressure, [Formula: see text] is a parameter which can take on values [Formula: see text] as well as A and [Formula: see text] are positive constants. We draw the state spaces and analyze the nature of the singularity at the beginning, as well as the fate of the universe in the far future. In particular, we address the question whether there is a solution which is stable for all the cases. Nature Publishing Group UK 2021-02-02 /pmc/articles/PMC7854687/ /pubmed/33531516 http://dx.doi.org/10.1038/s41598-020-80396-w Text en © The Author(s) 2021 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Yılmaz, Ali Osman
Güdekli, Ertan
Dynamical system analysis of FLRW models with Modified Chaplygin gas
title Dynamical system analysis of FLRW models with Modified Chaplygin gas
title_full Dynamical system analysis of FLRW models with Modified Chaplygin gas
title_fullStr Dynamical system analysis of FLRW models with Modified Chaplygin gas
title_full_unstemmed Dynamical system analysis of FLRW models with Modified Chaplygin gas
title_short Dynamical system analysis of FLRW models with Modified Chaplygin gas
title_sort dynamical system analysis of flrw models with modified chaplygin gas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7854687/
https://www.ncbi.nlm.nih.gov/pubmed/33531516
http://dx.doi.org/10.1038/s41598-020-80396-w
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